My father had a bone scan done and it came up clean. 4 days later he had PET/CT scan done and these are the results that came back.
"No metabolically active neoplastic disease. However, sclerotic lesions such as in the thoracolumbar spine, right posterolateral 10 rib and right posterior ilium could represent osseus metastases, although recent bone scan was negative.....Sclerotic lesions scattered skeleton, for instance in the thoracolumbar spine (for instance involing the spinous process of a mid lumbar spine), right posterolateral 10th rib and right posterior ilium without significant uptake."
I'm just speechless right now. His last PSA was less than 0.02, so either he must be castrate resistant or these new lesions are not giving off any PSA.